CN2429367Y - Automotive fuel tank cover with fuel indicator - Google Patents
Automotive fuel tank cover with fuel indicator Download PDFInfo
- Publication number
- CN2429367Y CN2429367Y CN 00208692 CN00208692U CN2429367Y CN 2429367 Y CN2429367 Y CN 2429367Y CN 00208692 CN00208692 CN 00208692 CN 00208692 U CN00208692 U CN 00208692U CN 2429367 Y CN2429367 Y CN 2429367Y
- Authority
- CN
- China
- Prior art keywords
- oil
- amplifier
- mouth
- potential
- potential comparator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Level Indicators Using A Float (AREA)
Abstract
The utility model relates to a cover capable of displaying oil quantity of an oil tank of an automobile. The utility model comprises a cover top and a cover body, wherein, a circuit board of an oil level displaying circuit, which is connected with a float potentiometer in the oil tank, is arranged in the cover body; an LE displayer is arranged on the lateral part of the cover top or on the inner side of the top of the cover top; the oil level displaying circuit comprises a power amplifier which is connected with the float potentiometer, and amplifying output terminals of the power amplifier are respectively connected with at least two sets of electric potential comparators in parallel; the output terminals of each set of electric potential comparators are respectively connected with light-emitting diodes, and the negative comparison terminal of each electric potential comparator are respectively orderly connected with the respective terminals in a connection in series state of a set of resistors in a connection in series state. Therefore, the utility model has the advantages of simple and reasonable structure, low manufacture cost, easy installation, visual use, long service life, convenient popularization and application, etc.
Description
The utility model relates to a kind of fuel lid that is exclusively used in motor vehicle oil tank,, belong to the motor vehicle oil tank accessory to show the device of oil mass indication in the fuel tank.
In the prior art, all be placed with a float potential device in the motor vehicle oil tank, this float potential device directly picks out to display instrument with lead, is used to show the oil level in the fuel tank.Present described display instrument mainly contains two kinds, and a kind of is pointer display instrument, and it represents the oil mass that fuel tank is interior with pointer and scale; Another kind is the Warning light display instrument, and when oil mass dropped to barrier line in the fuel tank, Warning light was bright, and the expression oil mass is few, need refuel.The fuel tank fuel quantity indicating device of above-mentioned two kinds of structures, the former is used for motor bike more, the latter is used for automobile more, but because their read out instrument, promptly the position of meter displaying device all is installed in the front portion of self-propelled vehicle, as motor bike between two handles; Automobile then is installed on the facia board, their structure more complicated, and circuit connects longer, fragile, and cost is also high.
The purpose of this utility model is to overcome the deficiency of above-mentioned existence, directly read out instrument is installed in the fuel lid and provide a kind of, to constitute the automotive oil case lid that can show oil mass.
The purpose of this utility model is finished by following technical solution.This automotive oil case lid, it comprises that caping and lid two parts form, and the circuit card of the oil level display circuit that links to each other with float potential device in the fuel tank is housed in lid, in the sidepiece or the inside top of caping telltale is installed.
Described oil level display circuit comprises that one is connected to the amplifier that is made of an amplifier of float potential device, it amplifies mouth respectively and be connected to each potential comparator that is made of the LM324 amplifier of at least two groups, and the mouth of every group of potential comparator is connected to the LED active display.
Described potential comparator has four groups, and the negative pole of every group of potential comparator is relatively held on the end of series connection separately that is connected to one group of series resistance respectively successively.
The utility model also is connected to a triode amplifier on the described mouth that is connected to this group potential comparator on first resistance series connection end, its amplifying return circuit is connected to a LED light-emitting diode and differential concatenation in the mouth of an amplifier.
Description of drawings is as follows:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is schematic circuit diagram of the present utility model.
Below in conjunction with accompanying drawing the utility model is described in detail.Shown in Figure 1, it mainly be one with the fuel lid of fuel tank configuration, it comprises caping 1 and lid 2 two parts.The circuit card 3 of oil level display circuit is housed in the centre of lid 2, and the transverse plane of lid 2 is provided with A, B, three of C connect contact, and wherein the A contact is connected to normal voltage; The B contact is connected to zero line; The C contact is connected to the float potential device signal output part that is placed in the fuel tank.The end central authorities of lid 2 are provided with a connecting screw 4.Also be provided with telltale on described case lid, it comprises that one is placed in a transparent body 5 of caping 1 avris, and five LED light-emitting diodes 6 are housed on the inboard lid 2 of this transparent body 5.
Shown in Figure 2, the electrical signal of float potential device E1, E2 in the fuel tank is connected on the power amplifier IC1 who is made of the TL072 integrated package, and its amplifying signal mouth 7 is connected to respectively on the electrode input end 9,6,13,2 of four each potential comparator IC2 that are made of the LM324 integrated package.The signal of this group potential comparator IC2 is relatively held on the end points of the fourth gear resistance value that respectively is connected to one group of series resistance on (negative pole) 10,5,12,3, and the current potential of potential comparator compares thereby the different relatively potential values of formation are used for separately.Respectively be connected to light-emitting diode LDE2, a LDE3, LDE4, LDE5 on the comparison mouth 8,7,14,1 of IC2.On the mouth 8 that is connected to the potential comparator IC2 on first resistance series connection end, also be connected to a triode amplifier Q1, be connected to a LED 1 on its amplifying return circuit, and it goes back differential concatenation on the mouth 1 of a signal comparison amplifier IC3 who is made of the TL072 amplifier.When the oil mass in the fuel tank is sufficient, oil level is higher, at this moment the electric signal output voltage of float potential device is also high, the terminal voltage of the mouth 7 of power amplifier IC1 is also high, correspondingly the voltage on 9,6,13,2 ends of four potential comparator IC2 that are attached thereto is also higher relatively, and when certain high oil level, the terminal voltage of the mouth 7 of its power amplifier IC1 is higher than the relatively magnitude of voltage of end of arbitrary potential comparator IC2, four equal conductings of potential comparator IC2 this moment, all conducting is luminous at LED that their mouths join.Decline along with oil level in the fuel tank, the terminal voltage of the mouth 7 of power amplifier IC1 also correspondingly reduces, because the comparison terminal voltage value of four potential comparator IC2 is successively decreased from top to bottom, therefore when the terminal voltage of the mouth 7 of power amplifier IC1 reduce to potential comparator compare terminal voltage separately the time, potential comparator will end one by one, the also not conducting of corresponding bonded assembly LED.When oil level be low to moderate last potential comparator IC2 by the time, the current potential of the mouth 8 of this potential comparator IC2 will raise, triode amplifier Q1 just can conducting, make the LED1 light-emitting diode conducting in this amplifying return circuit and glimmer, bonded assembly amplifier IC3 reverse with it controls the blink cadence of this light-emitting diode, at this moment the oil mass in the state representation fuel tank is not enough, and the prompting fuel tank will refuel.Described LED 1 is red, and with the expression caution, other several is non-redness, as green.
The utility model compared with prior art, have simple in structure, rationally, compactness, cost of manufacture is low, Be easy to install, easy to use, directly perceived, long service life, safe and practical, easy to utilize, outstanding Be applicable to the characteristics such as fuel tank of motorcycle.
Claims (4)
1, a kind of automotive oil case lid that can show oil mass, it comprises caping and lid two parts composition, it is characterized in that being equipped with in the described lid (2) circuit card (3) of the oil level display circuit that links to each other with float potential device in the fuel tank, telltale is installed in the sidepiece or the inside top of caping (1).
2, the automotive oil case lid that can show oil mass as claimed in claim 1, it is characterized in that described oil level display circuit comprises that one is connected to the power amplifier IC1 that is made of an amplifier of float potential device E1, E2, it amplifies mouth 7 respectively and be connected to each potential comparator IC2 that is made of the LM324 amplifier of at least two groups, and the mouth of every group of potential comparator IC2 is connected to the LED active display.
3, the automotive oil case lid that can show oil mass as claimed in claim 2 is characterized in that described potential comparator IC2 has four groups, and the negative pole of every group of potential comparator is relatively held on the end of series connection separately that is connected to one group of series resistance respectively successively.
4, the automotive oil case lid that can show oil mass as claimed in claim 3, it is characterized in that being connected to a triode amplifier Q1 on the described mouth 8 that is connected to this group potential comparator IC2 on first resistance series connection end, its amplifying return circuit is connected to a LED1 light-emitting diode and differential concatenation in the mouth of an amplifier IC3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00208692 CN2429367Y (en) | 2000-05-12 | 2000-05-12 | Automotive fuel tank cover with fuel indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00208692 CN2429367Y (en) | 2000-05-12 | 2000-05-12 | Automotive fuel tank cover with fuel indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2429367Y true CN2429367Y (en) | 2001-05-09 |
Family
ID=33575998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00208692 Expired - Fee Related CN2429367Y (en) | 2000-05-12 | 2000-05-12 | Automotive fuel tank cover with fuel indicator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2429367Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989492A (en) * | 2015-06-10 | 2015-10-21 | 国家电网公司 | Over-limit alarm circuit for oil level of lubricating oil of fuel oil generator |
-
2000
- 2000-05-12 CN CN 00208692 patent/CN2429367Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989492A (en) * | 2015-06-10 | 2015-10-21 | 国家电网公司 | Over-limit alarm circuit for oil level of lubricating oil of fuel oil generator |
| CN104989492B (en) * | 2015-06-10 | 2017-07-11 | 国家电网公司 | A kind of fuel electric generator lubricant level overload alarm circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| FG1K | Grant of utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |